An instrument, sometimes modelled after a guillotine, for use in cutting away a portion or all of a hypertrophied tonsil. ... Origin: tonsillo-+ G. Tomos, cutting ... (05 Mar 2000) ... 
Type: Term Pronunciation: ton-sil′ō-tōm Definitions: 1. An instrument, sometimes modeled after a guillotine, for use in tonsillectomy.